ACCorDing to thE spEAkEr, whAt CAn A spEAkEr Do to kEEp An AuDiEnCE's AttEntion
A．spEAk vEry louDly.
B．Ask quEstions FrEquEntly.
C．vAry tonE, volumE AnD spEED oF spEECh.
D．limit thE spEECh to A short on